vue项目登录及token验证 vue-ant

深碍√TFBOYSˉ_ 2021-07-24 19:29 441阅读 0赞

在前后端完全分离的情况下，Vue项目中实现token验证大致思路如下：

1、第一次登录的时候，前端调后端的登陆接口，发送用户名和密码

2、后端收到请求，验证用户名和密码，验证成功，就给前端返回一个token

3、前端拿到token，将token存储到localStorage和vuex中，并跳转路由页面

4、前端每次跳转路由，就判断 localStroage 中有无 token ，没有就跳转到登录页面，有则跳转到对应路由页面

5、每次调后端接口，都要在请求头中加token

6、后端判断请求头中有无token，有token，就拿到token并验证token，验证成功就返回数据，验证失败（例如：token过期）就返回401，请求头中没有token也返回401

7、如果前端拿到状态码为401，就清除token信息并跳转到登录页面

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实操代码：

1.login页(账号密码登录完成后，将后台返回的token储存到本地)；最后附上了登录页完整代码

handleSubmit(e) { 
          var that = this;
          this.userName = this.userName.trim();
          this.password = this.password.trim();
          if (this.userName === "" && this.password === "") { 
            that.$message.warning("账号和密码无内容");
            return;
          }
          if (this.userName === "") { 
            that.$message.warning("账号无内容");
            return;
          }
          if (this.password === "") { 
            that.$message.warning("密码无内容");
            return;
          }
    
          var username = document.getElementById("username").value;
          var password = document.getElementById("password").value;
    
          
           e.preventDefault();
            this.form.validateFields((err, values) => { 
              //这一步将用户名储存在vuex ||||||||||目前域账号和用户名都是写一样了||||||||||||||||||||||||||||||||||||||||||||||||
              axios
                .post(this.$store.state.windowCONTENT + "sysConfig/getUserRole", { 
                  loginUser: this.userName,
                })
                .then((res) => { 
                  if (res.data.success == 0) { 
                    //有权限
                    this.$store.state.loginUser = this.userName;
                    this.$store.state.userName = this.userName;
                    this.$store.state.roleCode = res.data.data.roleCode;
                    //存入token
                    localStorage.setItem("token",JSON.stringify(res.data.data.token));
                    // console.log(res.data.data,this.$store.state.roleCode);
                    if (!err) { 
                      this.$router.push("/layout");
                      this.$message.success("登陆成功");
                    }
                  } else { 
                    //无权限
                    this.$message.error(res.data.data);
                  }
                });
            });
                
         
        },

2.marn.js（配置请求拦截器，每次请求携带token，后端进行验证；配置响应拦截器，根据后端验证返回的结果，判断token是否过期）

import "babel-polyfill";
    import Vue from "vue";
    import App from "./App.vue";
    import router from "./router";
    import store from "./store";
    import {  Button, message } from 'ant-design-vue';
    import Antd from "ant-design-vue";
    import "ant-design-vue/dist/antd.css";
    import zh_CN from "ant-design-vue/lib/locale-provider/zh_CN";
    import moment from "moment";
    import "moment/locale/zh-cn";
    import "./assets/iconfont/iconfont";
    import axios from "axios";
    
    Vue.component(Button.name, Button);
    
    Vue.config.productionTip = false;
    
    Vue.use(Antd);
    Vue.prototype.$message = message;
    
    // 设置axios全局默认的BASE-URL， 只要设置了全局的默认base_url，以后的请求会自动拼接上base_url
    //axios.defaults.baseURL = 'http://localhost:8888/api/private/v1/'
    
    // 配置axios的请求拦截器-(每次在请求头上携带后台分配的token-后台判断token是否有效等问题)
    axios.interceptors.request.use(
      function(config) { 
        // 在发送请求之前做些什么
        // console.log('请求到了哟', config.headers.Authorization)
        // 统一的给config设置 token
        config.headers.Authorization = JSON.parse(localStorage.getItem("token"));
        config.headers['Token'] = JSON.parse(localStorage.getItem("token"));
        return config;
      },
      function(error) { 
        // 对请求错误做些什么
        return Promise.reject(error);
      }
    );
    
    //响应拦截器 与后端定义状态是100时候是错误 跳转到登录界面
    axios.interceptors.response.use(function (response) { 
      // 对响应数据做点什么
      console.log(response)
        //当返回信息为未登录或者登录失效的时候重定向为登录页面
      if (response.data.status == 100 || response.data.message == '用户未登录或登录超时，请登录！') { 
        router.push({ 
          path: "/login",
          querry: {  redirect: router.currentRoute.fullPath }//从哪个页面跳转
        })
        message.warning(response.data.message);
      }
      return response;
    }, function (error) { 
      // 对响应错误做点什么
      return Promise.reject(error)
    })
    
    moment.locale("zh-cn");
    new Vue({ 
      zh_CN,
      router,
      watch: { 
        // 监听路由变化
        "$route.path": function(newVal, oldVal) { 
          console.log(`new_path = ${ newVal}, old_path = ${ oldVal}`);
        },
      },
      store,
      render: (h) => h(App),
    }).$mount("#app");

3.router.js（配置导航守卫，有token或者是去登录页就通过，否则定向到登录页）

import Vue from 'vue'
    import VueRouter from 'vue-router'
    import Home from '../views/Home.vue'
    import Layout from '../components/Layout.vue'
    import Login from '../components/Login.vue'
    
    Vue.use(VueRouter)
    
      const routes = [
      { 
        path: '/',
        redirect: 'login'
      },
      { 
        path: '/login',
        name: 'Login',
        component: Login
      },
      { 
        path: '/layout',
        name: 'Layout',
        component: Layout
      },
      { 
        path: '/about',
        name: 'About',
        // route level code-splitting
        // this generates a separate chunk (about.[hash].js) for this route
        // which is lazy-loaded when the route is visited.
        component: () => import(/* webpackChunkName: "about" */ '../views/About.vue')
      }
    ]
    
    const router = new VueRouter({ 
      routes
    })
    
    // to 到哪去
    // from 从哪来
    // next 是否放行 next() 放行 next('/login') 拦截到登录
    // 如果准备去登录, 不需要拦截
    // 如果已经登录过了, 有token, 不需要拦截
    // 如果不是去登陆, 且没有 token, 拦截到登录页
    router.beforeEach((to, from, next) => { 
      const token = JSON.parse(localStorage.getItem('token'));
      console.log(token);
      // console.log(to)
      if (to.path === '/login' || token) { 
        next()
      } else { 
        next('/login')
      }
    })
    
    export default router

4.退出：清除本地储存的token

//退出登录
        signOut() { 
          console.log("点击了退出", this.$route.query.sessionId);
    
          localStorage.clear("token");
          this.$route.push('/')
          //将vuex的数据初始化和清除默认的数据
        },

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完整登录页

<template>
      <div class="login">
        <div class="logo">
          <img :src="logoUrl" alt />
        </div>
    
        <div class="welcome">WELCOME</div>
        <div class="platform">欢迎来到XX平台</div>
    
        <div class="box">
          <a-form
            id="components-form-demo-normal-login"
            :form="form"
            class="login-form"
            @submit.prevent="handleSubmit"
          >
            <a-form-item>
              <div class="l-bor">登录</div>
            </a-form-item>
            <a-form-item>
              <div class="account">账号</div>
            </a-form-item>
            <a-form-item>
              <a-input v-model="userName" allowClear class="user-name" placeholder="请输入">
                
                <a-icon slot="prefix" type="user" style="color: rgba(0,0,0,.25)" />
              </a-input>
            </a-form-item>
            <a-form-item>
              <div class="p-box">密码</div>
            </a-form-item>
            <a-form-item>
              
              <a-input-password
                v-model="password"
                allowClear
                class="password"
                type="password"
                placeholder="请输入"
              >
                
                <a-icon slot="prefix" type="lock" style="color: rgba(0,0,0,.25)" />
              </a-input-password>
            </a-form-item>
            <a-form-item>
              
              
              <a-button
                :style="{opacity: (btnFlag ? .5 : 1)}"
                type="primary"
                html-type="submit"
                class="login-form-button"
              >
                <span
                  style="width:58px;
                height:24px;
                font-size:17px;
                font-family:PingFang-SC-Light,PingFang-SC;
                font-weight:300;
                color:rgba(255,255,255,1);
                line-height:24px;
                text-shadow:0px 2px 3px rgba(62,32,201,0.1);"
                >登录</span>
              </a-button>
              
              
            </a-form-item>
          </a-form>
        </div>
        <div class="bottom"></div>
      </div>
    </template>
    
    <script>
    import axios from "axios";
    export default { 
      data() { 
        return { 
          logoUrl: require("../assets/logo.svg"),
          userName: "",
          password: "",
          btnFlag: true,
          flagColor: { 
            opacity: 0.5,
          },
        };
      },
      beforeCreate() { 
        this.form = this.$form.createForm(this, {  name: "normal_login" });
      },
      created() { 
      },
      methods: { 
        handleSubmit(e) { 
          var that = this;
          this.userName = this.userName.trim();
          this.password = this.password.trim();
          if (this.userName === "" && this.password === "") { 
            that.$message.warning("账号和密码无内容");
            return;
          }
          if (this.userName === "") { 
            that.$message.warning("账号无内容");
            return;
          }
          if (this.password === "") { 
            that.$message.warning("密码无内容");
            return;
          }
    
          // jucenter.submit({name:this.userName,pwd:this.password});
          e.preventDefault();
          this.form.validateFields((err, values) => { 
            //这一步将用户名储存在vuex ||||||||||目前域账号和用户名都是写一样了||||||||||||||||||||||||||||||||||||||||||||||||
            console.log(this.userName, this.password);
            axios.post(
              this.$store.state.windowCONTENT + "sysConfig/getUserRole",
              { loginUser: this.userName}
            ).then(res => { 
              if (res.data.success == 0) { //有权限
                this.$store.state.loginUser = this.loginUser;
                this.$store.state.userName = res.data.data.userName;
                this.$store.state.roleCode = res.data.data.roleCode;
                //存入token
                localStorage.setItem("token",JSON.stringify(res.data.data.token));
                if (!err) { 
                  this.$router.push("/layout");
                  console.log(111);
                  this.$message.success('登陆成功')
                }
              } else { //无权限
                this.$message.error(res.data.data)
              }
            })
          });
        },
      },
      watch: { 
        userName: function (v1, v2) { 
          var that = this;
          if (v1 && this.password) { 
            this.btnFlag = false;
            console.log(this.btnFlag);
          } else { 
            this.btnFlag = true;
            console.log(this.btnFlag);
          }
        },
        password: function (v1, v2) { 
          var that = this;
          if (v1 && this.userName) { 
            this.btnFlag = false;
            console.log(this.btnFlag);
          } else { 
            this.btnFlag = true;
            console.log(this.btnFlag);
          }
        },
      },
    };
    </script>
    <style   lang="less">
    .login { 
      position: relative;
      text-align: left;
      height: 100%;
      background: linear-gradient(
        154deg,
        rgba(119, 182, 244, 1) 0%,
        rgba(66, 106, 229, 1) 100%
      );
      // background-color: pink!important;
      // overflow: hidden;
    
      .logo { 
        position: absolute;
        top: 21px;
        left: 35px;
      }
    
      .welcome { 
        position: absolute;
        bottom: 60%;
        left: 10%;
        width: 416px;
        height: 100px;
        font-size: 72px;
        font-family: PingFang-SC-Regular, PingFang-SC;
        font-weight: 400;
        color: rgba(255, 255, 255, 1);
        line-height: 100px;
        letter-spacing: 6px;
      }
    
      .platform { 
        position: absolute;
        bottom: 53%;
        left: 10%;
        width: 313px;
        height: 33px;
        font-size: 24px;
        font-family: PingFang-SC-Light, PingFang-SC;
        font-weight: 300;
        color: rgba(255, 255, 255, 1);
        line-height: 33px;
        letter-spacing: 2px;
      }
    
      .box { 
        position: absolute;
        bottom: 10%;
        right: 0;
        // margin: 0 auto;
        // margin-bottom: 151px; //定位高度-----↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓↓
        margin-right: 21%;
        width: 370px;
        height: 500px;
        border-radius: 10px;
        background: rgba(252, 251, 255, 1);
        padding: 0px 53px;
    
        //去除默认下边距
        .ant-form-item { 
          margin-bottom: 0;
        }
        //输入框
        .ant-input-affix-wrapper .ant-input:not(:last-child) { 
          height: 36px;
          font-size: 14px;
          font-family: PingFang-SC-Regular, PingFang-SC;
          font-weight: 400;
          color: rgba(53, 58, 64, 1);
          // background-color: pink;
        }
        //登录按钮
        #components-form-demo-normal-login .login-form-button { 
          width: 264px;
          height: 44px;
          background: linear-gradient(
            90deg,
            rgba(60, 163, 247, 1) 0%,
            rgba(28, 106, 235, 1) 100%
          );
          box-shadow: 0px 2px 3px 0px rgba(62, 32, 201, 0.1);
          border-radius: 6px;
        }
    
        .l-bor { 
          margin-left: -53px;
          margin-top: 50px;
          line-height: 25px;
          border-left: 6px solid rgba(28, 106, 235, 1);
          padding-left: 47px;
          font-size: 18px;
          font-family: PingFang-SC-Medium, PingFang-SC;
          font-weight: 500;
          color: rgba(53, 58, 64, 1);
          letter-spacing: 1px;
        }
        // .account{ 
        // margin-top: 58px;
        // width:27px;
        // height:17px;
        // font-size:12px;
        // font-family:PingFang-SC-Light,PingFang-SC;
        // font-weight:300;
        // color:rgba(53,58,64,1);
        // line-height:17px;
        // letter-spacing:1px;
        // }
        .ant-form-item:nth-child(2) { 
          position: absolute;
          top: 133px;
          .account { 
            width: 27px;
            height: 17px;
            font-size: 12px;
            font-family: PingFang-SC-Light, PingFang-SC;
            font-weight: 300;
            color: rgba(53, 58, 64, 1);
            line-height: 17px;
            letter-spacing: 1px;
          }
        }
        .ant-form-item:nth-child(3) { 
          position: absolute;
          top: 160px;
          width: 264px;
        }
        .ant-form-item:nth-child(4) { 
          position: absolute;
          top: 230px;
          width: 264px;
          .p-box { 
            width: 27px;
            height: 17px;
            font-size: 12px;
            font-family: PingFang-SC-Light, PingFang-SC;
            font-weight: 300;
            color: rgba(53, 58, 64, 1);
            line-height: 17px;
            letter-spacing: 1px;
          }
        }
        .ant-form-item:nth-child(5) { 
          position: absolute;
          top: 257px;
          width: 264px;
        }
        .ant-form-item:nth-child(6) { 
          position: absolute;
          top: 376px;
          width: 264px;
        }
      }
      .bottom { 
        position: absolute;
        bottom: 0;
        width: 100%;
        // height: 151px; //固定高度-----↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑
        height: 10%; //固定高度-----↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑↑
        background: linear-gradient(
          360deg,
          rgba(75, 118, 232, 0) 0%,
          rgba(57, 98, 224, 0.41) 100%
        );
      }
    }
    #components-form-demo-normal-login .login-form { 
      max-width: 300px;
    }
    #components-form-demo-normal-login .login-form-forgot { 
      float: right;
    }
    #components-form-demo-normal-login .login-form-button { 
      width: 100%;
    }
    </style>